Today the unit came from China !! Had expected a German dispatch. OK no extra shipping costs calculated, but not ecological - for 1 order. Packaging minimally - 1 box, where everything herflog back and. Since everything is unbreakable, no matter. 3 watches waiting for the "use". First, select the dimension of plastic shell, so that the watch glass does not burst. Found and screwed Matching part - easy going. The counterpart screwed up to the NO. However, since the lever stroke and the usability were not optinal, I have another smooth! Plastic plate loosely sandwiched and it was - ergonomic - a lot better. 2 clocks needed some force, then they had to, 1 clock went to easily. All in all, useful tool. Because of the need to improvise there is 1 point deduction.